sp.s 



cla 



B 



FIG. 349. The URINOGENITAL ORGANS OF Scyllium can.icula. (From Parker's 



Practical Zoolcxjy. ) 



A, male, and B, female. Only the anterior end of the gonad is represented in 

 each figure, and except that in B both kidneys are shown, the organs of the 

 right side only are drawn. In A the seminal vesicle and sperm-sac are dis- 

 sected away from the kidneys and displaced outwards, and the urinary ducts 

 inwards. 



ab.p, depression into which the abdominal pore opens ; cl, cloaca ; els, clasper ; 

 tf.d, vasa efferentia extending between the testis and the anterior section of 

 the mesonephros ; e.p, k', middle section of mesonephros ; , posterior section 

 of mesonephros ; Ir, anterior portion of liver ; m.d, vestigial Miillerian duct 

 in the male; oes, gullet ; or, ovary; ovd, oviduct (Miillerian duct); ovd' 

 common ctelomic and oi'd", cloacal aperture of oviducts ; r, rectum ; sh.yf, 

 shell-gland ; pd, Wolffian duct (vas deferens) ; xp.s, sperm-sac ; s.v, vesicula 

 seminalis, and s.r', its aperture into the urinogenital sinus ; ts, testis ; ti.g.s, 

 urinogenital sinus ; ur, ducts of posterior section of kidney, and nr' their 

 apertures into the cloaca ; u.s, urinary sinus of female. 



